Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:
Indexado |
|
||||||
DOI | 10.4067/S0717-97072014000300008 | ||||||
Año | 2014 | ||||||
Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
In this study levels, fluxes and temporal trend of PAHs are reported in a sediment core from Chungara Lake (18 degrees S) in Northern Chile. The sediments were obtained by Kayac corer and freeze dried. PAHs were extracted in SOXHLET system and measured by HPLC with diode array detector and fluorescence detection. Sedimentary record chronology was determined using Pb-210 isotopes and organic carbon (%) was also measured in sediments. Concentrations (ng g(-1) d.w.) of PAHs were low ranging from similar to 1 to 50. PAHs fingerprint was dominated by 3-ring (21%) and 4-ring. Organic carbon (%) ranged from similar to 17 to 24 (21 +/- 3) and no statistical significant correlation (p<0.05) was detected between OC (%) and PAHs along the sediment core. PAHs fluxes (mu g m(-2)yr(-1)) fluctuated from similar to 0.3 (cm 1) to 35 (cm 5) in 1978. LPAHs/HPAHs ratios (0.04 to 3) indicate petrogenic and pyrolytic origin of PAHs. This results contributes with new information of PAHs deposition at high altitudinal lake in Southern Hemisphere.
Ord. | Autor | Género | Institución - País |
---|---|---|---|
1 | POZO-GALLARDO, KARLA ANDREA | Mujer |
Masaryk Univ - República Checa
Universidad Católica de la Santísima Concepción - Chile Univ Siena - Italia Masaryk University - República Checa University of Siena - Italia Università degli Studi di Siena - Italia |
2 | Perra, Guido | Hombre |
Univ Siena - Italia
University of Siena - Italia Università degli Studi di Siena - Italia |
3 | Gomez, Victoria | Mujer |
Universidad Católica de la Santísima Concepción - Chile
|
4 | BARRA-RIOS, RICARDO ORLANDO | Hombre |
Universidad de Concepción - Chile
Centro de Recursos Hídricos para la Agricultura y Minería - Chile |
5 | URRUTIA-PEREZ, ROBERTO ENRIQUE | Hombre |
Universidad de Concepción - Chile
Centro de Recursos Hídricos para la Agricultura y Minería - Chile |
Fuente |
---|
FONDECYT |
FONDAP |
Fondo Nacional de Desarrollo Científico y Tecnológico |
FONDECYT (Chile) |
Czech Republic |
Agradecimiento |
---|
This research was funded partially by FONDECYT No1130329 (Chile). The authors gratefully acknowledge Corporacion Nacional Forestal (CONAF) permission to take lake sediment samples and to give facilities to the researchers in the Lauca National Park. thans also to project "CRHIAM/CONICYT/FONDAP/15130015 and to Czech Ministry of education of the Czech Republic (LM2011028 and LO1214). |